Moustached Tinkerbird

Overview

The moustached tinkerbird (Pogoniulus leucomystax) is a small bird in the family Lybiidae that inhabits high-altitude forests in central Africa. It is classified as Least Concern on the IUCN Red List and is notable for its specialized role in dispersing mistletoe seeds.

Identification

• Mostly yellow-tinged green plumage with a paler belly and bright-yellow rump.
• Distinctive white slash extending from the bill corners across the lower lores and down the sides of the neck.
• Blackish wings with yellow-tipped coverts creating the illusion of a broad yellow bar; off-white underwings visible in flight.
• Small size, weighing on average 11 grams, with black feet and a two-toned bill that is off-white to yellow at the base and grey or black towards the tip.

Habitat

The species is resident in high-altitude evergreen forests across Kenya, Malawi, Tanzania, Uganda, and Zambia, typically between 900 and 2,500 metres above sea level, though occasionally found up to 3,000 metres. It primarily frequents the dense interior of secondary growth forests and relies on habitats containing four to six mistletoe species for year-round sustenance.

Diet

The moustached tinkerbird is a frugivorous specialist that feeds almost exclusively on mistletoe berries from the Loranthaceae and Viscaceae families, although it also preys on insects. It removes the indigestible exocarps before swallowing the small berries whole and regurgitates the sticky seeds within minutes, acting as a crucial close-range disseminator for mistletoe.

Did you know?

Most other frugivorous birds deliberately avoid mistletoe berries, making the moustached tinkerbird often the sole user of this resource and significantly reducing competition. The bird aids in the rapid germination of these seeds, which typically sprout within one to two days after landing on neighboring branches.